Genetic Abbreviations

Geneticists working with Drosophila have worked out a convention for labeling mutations. If the mutation is recessive, the abbreviation begins with a lowercase letter. If the mutation is dominant, the first letter of the abbreviation is capitalized. For example, the dominant mutant gene for sternopleural bristles is abbreviated as Sp and the recessive mutant gene for mahogany eyes is abbreviated as mah. The normal "wild type" version of the gene is denoted using the same abbreviation as the mutant version, but with a "+" superscript. For example, Sp+ and mah+. Sometimes, when the meaning is obvious, a "+" by itself is used as a shorthand for the wild-type gene. For example, the heterozygote genotypes +/Sp and +/mah. Different variations of the mutant gene (different alleles) are sometimes distinguished by appending superscript abbreviations to the main abbreviation.

FlyLab does not follow this protocol. Since the idea behind FlyLab is for users to discover the genetic characteristics of the mutations by "experimentation," no clues as to dominance or recessiveness are provided by the use of standard abbreviations. Instead, all the letters of the abbreviation are capitalized. In most cases, the letters used are the same as in the standard notation; however, in a few cases it was necessary to modify the choice of letters because capitalization resulted in two different mutations (a dominant and a recessive) with the same abbreviation. A table of the genetic abbreviations used in FlyLab appears below.

AbbreviationMutant Phenotype
APApterous Wings
ARAristapedia Antennae
BBar Eyes
BLBlack Body
BWBrown Eyes
CCurved Wings
CVCrossveinless Wings
CYCurly Wings
DDichaete Wings
EEbony Body
EYEyeless Eyes
DPDumpy Wings
FForked Bristles
LLobe Eyes
MMiniature Wings
PRPurple Eyes
RIRadius Incompletus Wings
SSable Body
SBStubble Bristles
SDScalloped Wings
SESepia Eyes
SNSinged Bristles
SSSpineless Bristles
STStar Eyes
SVShaven Bristles
TTan Body
VGVestigial Wings
WWhite Eyes
YYellow Body